Regarding Q1, the ADV7625/ADV7626/ADV7627 products support up to 3840x2160 30 frames per second (2160p30) and are able to pass 4:2:0 data. We are about to publish an application note (AN-1299) on this topic. I will let you know when it is available.

Regarding Q2, since this is related to HDCP, it would be better to discuss via private message. I will send you an email.

Regarding Q3, this would depend on the end customer and would require an SLA. It would be best to discuss details with your sales contact.

Regarding Q4, the output from the integrated OSD generator can be overlaid on both output channels simultaneously.

On Q1: Yes, That's what Matt was talking about in his previous answer.

On Q2: To be clear-- we can't give you legal advice on what is allowed or not. As a general rule, receiving encrypted data and sending it out side a system unencrypted is most likely a violation of the HDCP agreement. In terms of the chip: You have no control over the receiver for encryption-- it's based on whether the TX encrypts or not. ADV7626 has keys and will decrypt. On the output side, you can set whether it encrypts or not with a bit in the HDMI TX map.